BIGLOOK, Since that posting to you I have read that the “151” is the state code for Hawaii.
Obama’s alleged cert shows “151 1961-010641”. It encodes the state (151 is Hawaii), the birth year (1961), and remaining number may be a serialization of the filing of a birth record within a year.
Based on births for Hawaii in 1961 according to US Vital Statistics, there were 17578 births in Hawaii in 1961. Assuming they are equally distributed per day, the 10641 corresponds to August 8th. Obama claims to have been born on the 4th, and his birth announcement is printed in local papers on the 13th, so it is likely the 10641 number is the serial number of when the birth was recorded in 1961 in Hawaii.
Would your son’s cert # match to that theory that the last sequence of digits is a serial number? US vital stats are found at
http://www.cdc.gov/nchs/products/pubs/pubd/vsus/vsus.htm